Whip-roll construction for looms



Jan. 27, 1931. H. A. DAVIS 1,790,201

mm Rpm. con s'r'kuc'rvzou non LOOIIS Filed Sept. 1a, 1928 2 Sheets-Shoot 1 Inventor. Harry A. Davns bymwkw Anya Jan. 27, 1931.

H. A. ogwrs WHIP ROLL CONSTRUCTION FOR LOOMS Filed Sept. 13, 1928 ZSheets-Sheo! 2 Patented Jan. 27, 1931 HZAZRJBZY'K. DAvIs; or: nornnALnyivmssaonusnrtrs; Assier von'ro nsam goonrom- Tron; OFVHOPEDALE', mAssaonusnr'rsja cosr sawmw or iviaim i W P-ROLL coNsTRuo'rIo -FoR LoioMs Application fiierrse temberis,1928:;seminar-305368; i

' Thisinvention relatesto a-whiproll construction fora loom of that-type inwhicl1 the warp beam is in two or more sections. In

such a type of loom, it is necessaiytoequalize .the tension on the warps extending fromthe entire warp sheet to control the tension and eifect the required let-01f But it is found in practice that the whip roll acts unequally uponand produces an unequal drag uponthe warps extendingfrom the difierent beam sec- 1 tions.

vent-ion.

It is the object of the present invention to provide a-whip-roll for'cooperating with a sectional warp beam and in which the sections of the whip roll cooperating with the warp beam sections shall act independently. It is a further'object of the invention to provide a whip roll having a plurality of warp-engagingsleeves independently rotata ble and corresponding-to the warpbeam sections;

provide a whip roll lhavinga plurality of independently rotatable warp-engaging sleeves together with means for preventingthewarps running over-the sleeves from sliding over the ends thereof.

These and other objects and features of the invention will appear more fully from theaccompanying description and drawings and will be particularly pointed out in the claims.

The drawings illustrate only so -muoh of an ordinary type of loom embodying a sec tionalwarp beam asis'necessa-ry to a disclo v sure of a preferred form of thepres'ent in- In the drawings: I I Fig. 1 is a side elevationof ap'ortion'of the loomQ; v i

Fig, 2 is a top plan view partially broken away ofthe construction showninFi'g. 1. g

It is afurther object of the invention to 31 isa detail in longitudinal cross "section of one end of the whip roll. v V

Fig; 4 is a detail in longitudinal cross sec tion of the central portion'of the whip'roll.

The side frames land 2-ofthe loom-are Provide/din p ihom w th suitable bearingsfij in which, together with an inter-I mediate bearing 4, are supported the gud g'eons f two axially aligned warp beam'se'c tions and 7. These warpbeam sections;v are shown as of a usual construction provided at their endswith gears 8 rigidly securedzthera" to and by means of which therotation of the Y beam sections is controlled to secure required tension on the warps and the desired let-off. A suitableineans for thus controlling the warpbeam sections throughthe gears S'is illustrated and "described in: my; application,

the mechanism there ma mas serves jto equalize the tension on the warps extendingfrointheibeam sections.

The tensiononthe warps and the let oifiis; v 1 as shown insaid application and asqusual', 7

controlled by, a I whip roll and it is with this Serial No, 178', 528; filed"March 26 1927; and

feature 'oftheloom that the'present inven tion is concerned In the'preferred construction illustrated, the whip} roll comprises i a shaft 9 mounted for bodily movement normal to its longitudinal axis and toward. and from the warp beamand with its longitudinal axisatalltimesparallel-to that of thewarp I beam. ,This result is securediinthe construe tion illustrated by inou itingitheends of the shaft 9 in open bearings 10in the ends ofv arms 11 extendingradially from and rigidly secured asbymeans'of the set screws 12lto a rock shaft 13Q The shaft 9 is furthermounted in an arm lat -extendingmadially from and secured to the shaft '13 as byqthe set screw 15 betweenadjacent ends of the warp beam 7 sections. Preferably. the whip roll shaft 9Iis axis and toward and from the warp beam and parallel with the warp beam j is thus secured by the -.ro cking i ,movem'entiof the I rock shaft 1 whichis"mounte d in bemngatms or whip roll shaft'fnormal' was longitudinal brackets 17 secured to the loom side frames.

An arm 18 secured to the rock shaft 13 extends radially rearward and downward and is shown as forming a part of a familiar type of let-off mechanism such as shown in the Draper and Roper Patent, No, 647,815, granted April 17 1900, the tension of the warps acting to swing the. whip roll shaft downward and the springs 19 and 20 acting In the present 1nvent1on,

addition to the whip roll shaft 9, comprises,

in the preferred form illustrated, a plurality of warp engaging sleeves 21 and 22, one corequalization of warp tension;

responding to each warp beam section and each independently rotatable on the whip roll shaft. Consequently if there is any variation in the movement of the warps let off from one warp beam section as compared with those let off from another warp beam section, these'whip roll sections rotate independently and thus'prevent any drag on the warps or any tendency to prevent absolute The warp engaging sleeves 21 and 22 are suitably journalled on the whip roll shaft preferably by means of bearing collars 23' mounted between the ends of the sleeves and the whip roll shaft and preferably constructed of oil-impregnated wood. These collars are shown as set in shouldered recesses formed in the sleeve ends. 'Such a construction permitsperfect freedom of rotation of the sleeves on the whip roll shaft and secures the desired lubrication.

Since the warp sheet is continuous through out the width of the loom where it passes through the loom harnesses and reed, but since the sheet is separated into sections ,by the warp beam sections, it follows that the warps leading from the warp beam sections converge toward the front of the loom and therefore the warps would tend to run olf adjacent ends of the whip roll sections. In order to prevent this, the invention further comprises, in the preferred form illustrated, cupped end thrust Washers fittedover those ends of the sleeves which are. subject to end thrust, these cupped washers acting to prevent the warps from sliding on these ends of the sleeves. .Such washers are shown inFigs. 2 and 4 at 24 and 25, the cupped washer 24 fitting over the inner end of the sleeve 21 and the cupped washer 25 fitting over the inner end of the adjacent sleeve 22., It will be noted that, for the reasons stated, the whip roll sections 21 and 22 tend to have end thrust against the radial arm 14 so that these washers 2 1 and 25 act both to take up end thrust and also to prevent the warps from working off the ends of the sleeves. These washers are preferably made of fibre or similar ma-' terial of an anti-frictional nature.

cient construction of whip roll in which the whip roll presents a plurality of independently rotatablesections .correspondingto the warp beam sections, thusin suri'ng that the whip roll shall act equally upon'the entire warp sheet and that thereshall be no unequal drag upon the sections of warps eX- tending from the different warp beam sections. v I

Having thus d'escribed'the invention, what is claimed as new, and desired to be secured by LettersPatent, is: j l

1. In a loom operating-with a sectional warp beam, a sectional whiproll mounted to move bodily toward and from the warp beamwith its longitudinal axis' 'at all times parallel to that ofthe warp beam, and with the sections of the whip roll independently rotatable. i

2. A loom comprising a Whip roll composed of independently rotatable sections, and

means for moving the entire whip roll bodily in a direction normal to its longitudinal axis. 8. In aloom, a whip roll comprising a shaft mounted for bodily movement normal to its There is thus-presenteda simple and eflilongitudinal axis, and a plurality of warpengaging sleeves independently rotatable on said shaft. P

' 4:. In a loom, awhip roll comprising a. shaft mounted for bodily movement normal to its longitudinalaxis, a plurality of warp-engaging sleeves independently rotatable on said shaft, and cuppedend thrust washers fitted over those ends of thesleeves which are subj eat to end thrust and actingto prevent warps sliding off suchsleeve ends.

'5. In aloom, a whip roll comprising a shaft mounted for bodily v movement normal to its longitudinal aXis,a' plurality of warp? engaging sleeves independently rotatable on said shaft, and bearing collars between the ends of the sleeves and the shaft.

6. In a loom, a whip roll comprising a shaft mounted for bodilymovement normal to its longitudinal axis, a plurality of warpengaging sleeves independently rotatable on said shaft, bearing collars between the ends of the sleeves and the shaft, and cupped end thrust washers fitted over those ends of the sleeves which are subject-to end thrust and acting to prevent warps sliding'ofl such arms and opposite the respective Warp beam sections.

8. A loom comprising a sectional Warp beam, a rock shaft journalled parallel to the Warp beam, radial arms rigid with the rock shaft and extending therefrom adjacent the ends of the warp beam sections, a whip roll shaft mountedin said arms, and a plurality of Warp-engaging sleeves journalled and inde) pendently rotatable on said shaft between said arms.

9. A loom comprising the construction defined in claim 8 together with cupped washers fitted over the ends of said sleeves adjacent an intermediate arm and acting to prevent warps sliding oif said sleeve ends. s s

In testimony whereof, I have signed my name to this specification.

' HARRY A. DAVIS. 

